Reed Relays Function A compact electromechanical switch that provides electrical isolation between the control coil and the load circuit, enabling reliable switching of control signals in a variety of control circuits. Key benefits Small footprint for space constrained assemblies Fast and repeatable switching suitable for signaling and low power loads Electrical isolation between coil and contacts improves protection of control circuitry Simple interface for automation, instrumentation, and microcontroller projects Sealed contact assembly for reliable operation in typical controlled environments Compatibility and materials Sealed reed contact technology inside a compact package Designed for use in control circuits across automation panels, instrumentation, and embedded systems Size and form factor Compact dimensions optimized for PCB mounting and dense assembly layouts Lightweight and easy to integrate into existing designs Performance Quick actuation with consistent switching behavior Reliable operation with good isolation between control input and switched load Use scenarios Scenario 1: In an automation panel, a PLC or microcontroller energizes the coil to switch a small indicator or sensor circuit Scenario 2: In a laboratory test bench, the relay routes a measurement signal while isolating the control logic from the device under test Scenario 3: In an embedded prototype, a digital control signal drives the relay to connect or disconnect a higherlevel circuit or sensor path